What IS a force?

Time for a Quiz!
1. Which of these is NOT a force?
a) Gravitational Force
b) Kinetic Force
c) Frictional Force

2. Which of these actions does NOT require a PUSH?( This question is easy)
a) Closing a book
b) Jumping
c) Opening a drawer

3. Which of these actions requires BOTH a push and a pull?
a) Kicking someone(irritating)
b) Wringing a towel
c) Zipping up a bag

4. Why is going DOWN stairs easier than going UP stairs?
a) Cuz going up requires enough force to overcome gravitational force
b) Cuz it's like that
c) Cuz the friction experienced is less when you are going down

5. Was my flashcard deck helpful? Or at least, correct?
a) Duh! Thanks!
b) Nope, these are lame
c) Not really sure, because I already knew these

6. Am I awesome?
a) Nope. You're just lame, and stupid
b) Meh, you're cool, I guess
c) OMG you're so awesome